Recombinant vectors are often propagated in bacterial cells. Indicate whether the statement is true or false
T
You might also like to view...
How does the size of fungal hyphae contribute to their ability to decompose detritus?
A. Fungal hyphae have a low ratio of surface area to volume, so they are able to absorb more nutrients. B. Fungal hyphae have high ratio of surface area to volume, so they are able to absorb more nutrients. C. Fungal hyphae have a low ratio of surface area to volume, so they are able to secrete more digestive enzymes into the surrounding environment to break down detritus. D. Fungal hyphae have a high ratio of surface area to volume, so they are able to secrete more digestive enzymes into the surrounding environment to break down detritus.
An obstetrician knows that one of her patients is a pregnant woman whose fetus is at risk for a serious disorder that is detectable biochemically in fetal cells. The obstetrician would most reasonably offer which of the following procedures to her patient?
A) karyotyping of the woman's somatic cells B) X-ray C) amniocentesis or CVS D) blood transfusion
Fimbriae and pili differ in that
A) there are only one or two pili per cell. B) pili are used for motility. C) pili are used to transfer DNA. D) pili are used for transfer of DNA and motility. E) pili are used for attachment to surfaces.
What kinds of evolutionary trends are represented by each of the two diagrams? The x-axis represents an ar-bitrary scale for a trait value, in this case nest diameter in a lineage of birds
a. A = active trend c. B = active trend b. A and B = active trend d. A and B = passive trend